Ink refill set for CIS/CISS or refillable cartridges using Epson 68, 69, 88 ink: NX300, NX400, NX305 Premium Water-based Photo Dye Inkjet Ink! Smell: Normal odor; Stability: No setting in 3 years (at normal storage); Temperature: -15C no frozen and 70C no gelling; Lightfastness: 5-6 BWS; Waterfastness: 3 (Average); Gasfastness: 4 (Good).